Patents by Inventor Pawan Malli

Pawan Malli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fracturing valve systems and methods
    Patent number: 11421508
    Abstract: Fracturing systems with frac valves having gates for controlling flow of fracturing fluid are provided. In one embodiment, a fracturing apparatus includes a frac valve having a housing with a cavity transverse to a bore. A gate is positioned in the cavity and is movable between open and closed positions to selectively block flow through the bore. The gate includes a seal assembly positioned to seal against a sidewall of the cavity to surround the bore and block flow through the frac valve when the gate is in the closed position. The seal assembly can be actuated between a less-energized state and a more-energized state following movement of the gate within the cavity from the open position to the closed position. Additional systems, devices, and methods for fracturing are also disclosed.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: August 23, 2022
    Assignee: Cameron International Corporation
    Inventors: Adam Christopherson, Michael Krejci, Pawan Malli, Leonard Vogel, Nicholas Ruff, Delbert Vanderford, Stuart Robinson, Dennis P. Nguyen
  • FRACTURING VALVE SYSTEMS AND METHODS
    Publication number: 20210332666
    Abstract: Fracturing systems with frac valves having gates for controlling flow of fracturing fluid are provided. In one embodiment, a fracturing apparatus includes a frac valve having a housing with a cavity transverse to a bore. A gate is positioned in the cavity and is movable between open and closed positions to selectively block flow through the bore. The gate includes a seal assembly positioned to seal against a sidewall of the cavity to surround the bore and block flow through the frac valve when the gate is in the closed position. The seal assembly can be actuated between a less-energized state and a more-energized state following movement of the gate within the cavity from the open position to the closed position. Additional systems, devices, and methods for fracturing are also disclosed.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 28, 2021
    Inventors: Adam Christopherson, Michael Krejci, Pawan Malli, Leonard Vogel, Nicholas Ruff, Delbert Vanderford, Stuart Robinson, Dennis P. Nguyen